Antiword is a free MS-Word reader for Linux, RISC
OS, and DOS. It converts the documents from Word
2, 6, 7, 97, 2000, 2002, and 2003 to text,
Postscript, and XML/DocBook. Antiword tries to
keep the layout of the document intact.

GNU TeXmacs is a free wysiwyw (what you see is what you want) editing platform with special features for scientists. The software aims to provide a unified and user friendly framework for editing structured documents with different types of content: text, mathematics, graphics, interactive content. TeXmacs can also be used as an interface to many external systems for computer algebra, numerical analysis, and statistics. New presentation styles can be written by the user and new features can be added to the editor using Scheme.

KOffice is an integrated office suite based on the KDE libraries. KOffice currently includes KWord, KSpread, KPresenter, KChart, Karbon14, Krita, Kexi, KFormula, Kugar, and Kivio. There are no special mail and news clients included in KOffice, because there are KMail and KNode available for KDE anyway. All KOffice components work together, and you can embed every KOffice component into any other KOffice component. This is realized using the KParts object model.

This is the first respectable English-Russian Dictionary with transcription (IPA) under GNU GPL. The dictionary has 46233 word articles and is 5.5MB. "MOVA" is a set of Bash and Tcl/TK scripts for dictionary management under UNIX.

Siag Office is a free office package which consists of the spreadsheet Siag, the word processor PW, the animation program Egon, the text editor XedPlus, the file manager Xfiler and the previewer Gvu. Siag is easy to use, yet infinitely flexible through multiple embedded interpreters and a plugin mechanism that allows other programs to run inside the main document. The supported interpreters are SIOD, Guile, Tcl, and Python.

Ted is a text processor running under X on Unix/Linux systems, with the ability to edit rich text documents on Unix/Linux in a WYSIWYG way. It also converts RTF to PostScript and PDF. RTF files from Ted are fully compatible with MS Word.

Z-Doc is an Aportis(TM) DOC compatible reader/writer with support for
encryption, compression, and serial port input/output. It is built mainly for
programmers who wish to access the DOC format files from a Palm Pilot or from
standalone Unix C code. It has modular read/write functions which can be picked
up and dropped into other GPLed projects.